Harder valve springs OM603
Harder valve springs OM603
01-17-2014, 03:21 AM
#2
RE: 1991 300D
Well head is just about done, new valve guides, minor bowl porting, new valves, weled up some pitting on head surface and finally the M103 valve springs.
The M103 springs are an exact match as far as size. However the wire diameter is 1mm larger and compressed to 1" they offer almost 100lbs more of pressure..
try and look here from duncansport 602 project tread
RE: 1991 300D
Well head is just about done, new valve guides, minor bowl porting, new valves, weled up some pitting on head surface and finally the M103 valve springs.
The M103 springs are an exact match as far as size. However the wire diameter is 1mm larger and compressed to 1" they offer almost 100lbs more of pressure..
01-17-2014, 06:28 AM
#3
I thought n/a springs are weaker than the turbo'd ones.
Btw how many hp have you had with that engine? I got a n/a 603 with 7mm and hx35 and I'm amazed how well it goes and holds up for a n/a. Got it up to 2.5 bar pressure
This post was last modified: 01-17-2014, 06:28 AM by Tito.
Are you the guy with the n/a 603 engine which hit 8.000 rpm?
I thought n/a springs are weaker than the turbo'd ones.
Btw how many hp have you had with that engine? I got a n/a 603 with 7mm and hx35 and I'm amazed how well it goes and holds up for a n/a. Got it up to 2.5 bar pressure
01-17-2014, 07:07 AM
#4
(01-17-2014, 06:28 AM)Tito Are you the guy with the n/a 603 engine which hit 8.000 rpm?
I thought n/a springs are weaker than the turbo'd ones.
Btw how many hp have you had with that engine? I got a n/a 603 with 7mm and hx35 and I'm amazed how well it goes and holds up for a n/a. Got it up to 2.5 bar pressure
Maybe
HahaAround 150hk
haha
(01-17-2014, 06:28 AM)Tito Are you the guy with the n/a 603 engine which hit 8.000 rpm?
I thought n/a springs are weaker than the turbo'd ones.
Btw how many hp have you had with that engine? I got a n/a 603 with 7mm and hx35 and I'm amazed how well it goes and holds up for a n/a. Got it up to 2.5 bar pressure
Maybe
HahaAround 150hk
haha
01-17-2014, 07:54 AM
#5
(01-17-2014, 02:35 AM)Flakis trashed my old 603 for missed gear on the valve spring had little time "/
So, I thought if anyone here knows any harder valve springs you can take on the mount instead?
Thanks in advance
103 053 00 20 $8.95 each.
Duncansport
01-17-2014, 07:54 AM #5(01-17-2014, 02:35 AM)Flakis trashed my old 603 for missed gear on the valve spring had little time "/
So, I thought if anyone here knows any harder valve springs you can take on the mount instead?
Thanks in advance
103 053 00 20 $8.95 each.
01-17-2014, 04:27 PM
#6
(01-17-2014, 07:54 AM)DuncansportThanks(01-17-2014, 02:35 AM)Flakis trashed my old 603 for missed gear on the valve spring had little time "/
So, I thought if anyone here knows any harder valve springs you can take on the mount instead?
Thanks in advance
103 053 00 20 $8.95 each.
01-19-2014, 11:42 AM
#7
'98 E300 Turbo "Juliette" - Brabus wheels and almost all the options a w210 could have
'87 300D Turbo "Roxanne" - #22 head - 400E brakes - EGR Delete - 17" Staggered AMG 5 spoke rims from CLK500 - 5 Spd manual
2007 Chevy 2500HD CCSB Duramax with about 400-500 rwhp depending on the tune I use
1983 300D Silver Exterior/Black inside - Sold and will be missed, may we never meet in a PnP.
2007 Chevy 2500HD CCSB Duramax with about 400-500 rwhp depending on the tune I use
1983 300D Silver Exterior/Black inside - Sold and will be missed, may we never meet in a PnP.
They're $6.75/each retail price at the local dealer. Not sure what they run in Sweden but just wanted to post since I've found recently that some parts are actually cheaper at the dealer than at aftermarket part suppliers.
'98 E300 Turbo "Juliette" - Brabus wheels and almost all the options a w210 could have
'87 300D Turbo "Roxanne" - #22 head - 400E brakes - EGR Delete - 17" Staggered AMG 5 spoke rims from CLK500 - 5 Spd manual
2007 Chevy 2500HD CCSB Duramax with about 400-500 rwhp depending on the tune I use
1983 300D Silver Exterior/Black inside - Sold and will be missed, may we never meet in a PnP.
2007 Chevy 2500HD CCSB Duramax with about 400-500 rwhp depending on the tune I use
1983 300D Silver Exterior/Black inside - Sold and will be missed, may we never meet in a PnP.
01-19-2014, 03:56 PM
#8
'98 E300 Turbo "Juliette" - Brabus wheels and almost all the options a w210 could have
'87 300D Turbo "Roxanne" - #22 head - 400E brakes - EGR Delete - 17" Staggered AMG 5 spoke rims from CLK500 - 5 Spd manual
2007 Chevy 2500HD CCSB Duramax with about 400-500 rwhp depending on the tune I use
1983 300D Silver Exterior/Black inside - Sold and will be missed, may we never meet in a PnP.
2007 Chevy 2500HD CCSB Duramax with about 400-500 rwhp depending on the tune I use
1983 300D Silver Exterior/Black inside - Sold and will be missed, may we never meet in a PnP.
Is there an advantage to the stronger springs on a stock engine? I'm prepping to do my #22 head swap and may use those springs. I'm not familiar with the advantages of a stronger valve spring? I plan to mod some things but mainly just IP/Turbo/intercooler type stuff.
'98 E300 Turbo "Juliette" - Brabus wheels and almost all the options a w210 could have
'87 300D Turbo "Roxanne" - #22 head - 400E brakes - EGR Delete - 17" Staggered AMG 5 spoke rims from CLK500 - 5 Spd manual
2007 Chevy 2500HD CCSB Duramax with about 400-500 rwhp depending on the tune I use
1983 300D Silver Exterior/Black inside - Sold and will be missed, may we never meet in a PnP.
2007 Chevy 2500HD CCSB Duramax with about 400-500 rwhp depending on the tune I use
1983 300D Silver Exterior/Black inside - Sold and will be missed, may we never meet in a PnP.
01-22-2014, 04:39 PM
#9
(01-19-2014, 03:56 PM)capflya Is there an advantage to the stronger springs on a stock engine? I'm prepping to do my #22 head swap and may use those springs. I'm not familiar with the advantages of a stronger valve spring? I plan to mod some things but mainly just IP/Turbo/intercooler type stuff.
Stock no but may help with valve float. Good to know the 103 spring works. I will plan on this for my rebuild.
This post was last modified: 01-22-2014, 04:44 PM by winmutt.
1987 300D Sturmmachine
1991 300D Nearly Perfect
1985 300D Weekend/Camping/Dog car
1974 L508D Motoroam Monarch "NightMare"
OBK #42
(01-19-2014, 03:56 PM)capflya Is there an advantage to the stronger springs on a stock engine? I'm prepping to do my #22 head swap and may use those springs. I'm not familiar with the advantages of a stronger valve spring? I plan to mod some things but mainly just IP/Turbo/intercooler type stuff.
Stock no but may help with valve float. Good to know the 103 spring works. I will plan on this for my rebuild.
1987 300D Sturmmachine
1991 300D Nearly Perfect
1985 300D Weekend/Camping/Dog car
1974 L508D Motoroam Monarch "NightMare"
OBK #42
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